There is a dispute over his name being Abdullah. Ibn Hajar in "Al-Isaabah", and many other narrations, narrates from Qasim Ibn Muhammad Ibn Abi Bakr, "I asked Ayesha the name of Abu Bakr. She said Abdullah. I said people are saying Ateeq. She said Abu Quhafa had three children, one was Ateeq, second Mu’taq and third, Otaiq. All three names are similar and derived from the same root."
He was mentioned in the Quran as the "second of the two who lay in the cave" in reference to the event of hijra, where with Muhammad he hid in the cave in Jabal Thawr from the Meccan search party that was sent after them, thus being one of few who were given direct mention in the Quran.
Imam Jafar al Sadiq famously narrated how the title "Siddiq" was given to Abu Bakr from Muhammad. Jafar was a direct descendant of Abu Bakr from his maternal side, as well as being a descendant of Ali from his father's side. Jafar al-Sadiq was also the successor of the Naqshbandi Sufi order believed to be originating from Abu Bakr himself. Imam Muhammad al Baqir, the father of Imam Jafar Sadiq, also called Abu Bakr with the title Siddiq.
Much of the available knowledge about Muhammad comes through Abu Bakr's daughter, Aisha. After the death of Abu Bakr, her brother Muhammad ibn Abi Bakr was raised by Ali. After Muhammad ibn Abi Bakr was killed by the Umayyads, Aisha raised and taught her nephew Qasim ibn Muhammad ibn Abi Bakr. Aisha also taught another nephew Urwah ibn Zubayr. He then taught his son Hisham ibn Urwah, who was the main teacher of Malik ibn Anas] whose views many Sunni follow.
Qasim's mother was of ‘Ali's family and his daughter Farwah bint al-Qasim, who married Muhammad al-Baqir, was the mother of Jafar al-Sadiq. Therefore al-Qasim was the grandson of the first caliph Abu Bakr and the grandfather of Ja'far al-Sadiq.
Another of Abu Bakr's grandsons, Abd Allah ibn al-Zubayr, was very close to Husayn bin Ali. After Hussein ibn Ali was betrayed by the people of Kufa and killed by the Yazid I Army of the, Umayyads ruler, Abd Allah ibn al-Zubayr confronted Yazid and expelled him from Iraq, southern Arabia and the greater part of Syria, and parts of Egypt. Following a lengthy campaign, on his last hour Abd Allah ibn al-Zubayr asked his mother Asma' bint Abu Bakr, the daughter of the first caliph, for advice. Asma' bint Abu Bakr replied to her son:
"You know better in your own self, that if you are upon the truth and you are calling towards the truth go forth, for people more honourable than you have been killed and if you are not upon the truth, then what an evil son you are and you have destroyed yourself and those who are with you. If you say, that if you are upon the truth and you will be killed at the hands of others, then you will not truly be free". Abd Allah ibn al-Zubayr left and was later also killed and the army now under the control of the Umayyads.
Lemon
The lemon is a small tree ("Citrus limon") that is green even in the winter. It came from Asia. 'Lemon' is also the name of the tree's oval-shaped yellow fruit. The fruit is used for cooking and other things in the world – usually for its juice.
People do not know for sure where lemons have come from. However, most people think that lemons first grew in India, northern Burma, and China. The lemon is the common name for "Citrus limon." A lemon is a yellow citrus fruit. It is related to the orange. Lemon juice is about 5% citric acid, and has a pH of 2 to 3. Lemon plants vary in size yet stay generally small. The tallest height they can get is about 6 meters tall.
Lemons taste sour. The juice, zest, and pulp are often used in cooking, often on fish and other meat for better taste. Lemon is also used to flavour drinks, such as lemonade or soft drinks.
Elevator
An elevator or lift is a vertical transport vehicle that efficiently moves people or goods between floors of a building. They are generally powered by electric motors that either drive traction cables and counterweight systems, or pump hydraulic fluid to raise a cylindrical piston.
Languages other than English may have loanwords based on either elevator (e.g., Japanese) or lift (e.g., Cantonese).
Because of wheelchair access laws, elevators are often a legal requirement in new multi-story buildings, especially where wheelchair ramps would be impractical.
Some argue that lifts began as simple rope or chain hoists. A lift is essentially a platform that is either pulled or pushed up by a mechanical means. A modern-day lift consists of a cab (also called a "cage" or "car") mounted on a platform within an enclosed space called a shaft or sometimes a "hoistway". In the past, lift drive mechanisms were powered by steam and water hydraulic pistons. In a "traction" lift, cars are pulled up by means of rolling steel ropes over a deeply grooved pulley, commonly called a sheave in the industry. The weight of the car is balanced with a counterweight. Sometimes two lifts always move synchronously in opposite directions, and they are each other's counterweight
The friction between the ropes and the pulley furnishes the traction which gives this type of lift its name.
Hydraulic lifts use the principles of hydraulics (in the sense of hydraulic power) to pressurize an above ground or in-ground piston to raise and lower the car. Roped hydraulics use a combination of both ropes and hydraulic power to raise and lower cars. Recent innovations include permanent earth magnet motors, machine room-less rail mounted gearless machines, and microprocessor controls.
The technology used in new installations depends on a variety of factors. Hydraulic lifts are cheaper, but installing cylinders greater than a certain length becomes impractical for very high lift hoistways. For buildings of much over seven stories, traction lifts must be employed instead. Hydraulic lifts are usually slower than traction lifts.
Lifts are a candidate for mass customization.
There are economies to be made from mass production of the components, but each building comes with its own requirements like different number of floors, dimensions of the well and usage patterns.
Elevator doors protect riders from being crushed in between the cab and the floor. The most common configuration is to have two panels that meet in the middle, and slide open laterally. In a cascading configuration (potentially allowing wider entryways within limited space), the doors run on independent tracks so that while open, they are tucked behind one another, and while closed, they form cascading layers on one side. This can configured so that two sets of such cascading doors operate like the center opening doors described above, allowing for a very wide elevator cab. In less expensive installations the elevator can also use one large "slab" door: a single panel door the width of the doorway that opens to the left or right laterally.
General
All elevators, whether traction or hydraulic, require a machine room to store large electric motors (or hydraulic pumps) and a controller cabinet. This room is located above or below the hoistway (or only below, for hydraulic elevators) and may contain machinery for a single or a group of elevators. Modern day traction motors boasting gearless and permanent magnet drive can be more compact and efficient; electronic microprocessors have replaced the mechanical relays. As a result, traction elevators can be built without a dedicated room above the shaft, saving valuable space in building planning.
The new lift design presents a departure from the traditional, looped over-the-top traction rope routing of traction elevators. The ends of the cables are fixed to the supporting structure, and the length of the cable are connected to the car and counterweight by means of a force-multiplying, energy saving compound pulley system. Machine room-less elevators have become a welcome alternative to the older hydraulic elevator for low to medium rise buildings.