Complex sentence: However, a grandparent is encouraged or required to designate an amount to the orphaned grandchildren as part of his or her will, known as "al-wasiyya al-wajiba".
Split into simpler sentences: However, a grandparent is encouraged or required to designate an amount to the orphaned grandchildren as part of his or her will. This is known as the "al-wasiyya al-wajiba".