Menses And Fasting
Such things are not determined from Quran or Hadith. They come from established sunnah that has been transmitted to us through ijma and tawatur.
mera view or hamne ye suna hai ke,agar aap sehri ke qareeb hai to roza na rakhe or agar aftar ke qareeb hai to roza valid hai,aqal is baat ko nahi manti ke din bhar roza ho or aftar se kuch waqt pehle ye mamla pesh aye to din bhar ka roza zaya ho jaye,or agar ye soch ke pehle se hi prepare ho ke aaj ye mamla hona hai or aisa aftar baad hota hai to din bhar roza na rakhna ghalat nahi hoga.