Ibn Abi Umayr, from Abu Basir, from Zurarah: Abu Abdillah عليه السلام, peace be upon him, said: "Part of the completion of fasting is the giving of zakat, just as sending blessings upon the Prophet, may Allah سبحانه وتعالى bless him and his family, is part of the completion of prayer. And whoever fasts but does not give it (zakat), his fast is not accepted if he deliberately leaves it. And whoever prays but does not send blessings upon the Prophet, may Allah سبحانه وتعالى bless him and his family, and deliberately leaves that out, then he has no prayer. Indeed, Allah سبحانه وتعالى the Exalted began with it before the prayer, as He سبحانه وتعالى said: ‘Indeed successful is the one who purifies himself, and remembers the name of his Lord and then prays.’" (Surah A'la 87:14 -15)