228 - Ishaq narrated to us, saying: Baqiyyah ibn al-Walid narrated to us, from al-Wadin ibn 'Ata', from Mahfuz ibn 'Alqamah al-Hadrami, from 'Abd al-Rahman ibn 'A'idh al-Awdi, from 'Ali ibn Abi Talib (may Allah be pleased with him), from the Prophet (peace and blessings of Allah be upon him), who said: "The eye is the drawstring of the anus, so when the eye sleeps, the drawstring is released."

229 - Some of them said: Abu Bakr ibn Abi Maryam informed me, from 'Atiyyah ibn Qays, from Mu'awiyah ibn Abi Sufyan, from the Prophet (peace and blessings of Allah be upon him), similar to it, and he added: "Whoever sleeps, let him perform wudu'."

• I heard Ahmad say: "Al-Hasan, Sa'id ibn al-Musayyib, 'Ata', and 'Urwah said: 'If sleep penetrates his heart, he must perform wudu'." This is not the madhhab (school of thought) of Ahmad.

230 - Muhammad ibn Yahya narrated to us, saying: al-Bursani narrated to us, saying: Sa'id informed us, from Qatadah, from Sa'id ibn al-Musayyib and al-Hasan, that they both said: "If sleep overtakes him while lying down or sitting, then wudu' has become obligatory upon him."

231 - Muhammad ibn Yahya narrated to us, saying: Muhammad ibn Bakr narrated to us, saying: Ibn Jurayj informed us, saying: 'Ata' used to say: "If sleep masters you, perform wudu', whether sitting or lying down."