220 — ‘Amr ibn ‘Awn narrated to us, Ḥafṣ ibn Ghiyāth narrated to us, from ‘Āṣim al-Aḥwal, from Abū al-Mutawakkil, from Abū Sa‘īd al-Khudrī, from the Prophet ﷺ, who said: “When one of you comes to his wife, and then it occurs to him to return, let him perform ablution (wuḍū’) between the two.”(1)

‌‌84 — Chapter: The person in a state of major impurity (junub) sleeping

221 — ‘Abdullāh ibn Maslamah narrated to us, from Mālik, from ‘Abdullāh ibn Dīnār, from ‘Abdullāh ibn ‘Umar, that he said: ‘Umar ibn al-Khaṭṭāb mentioned to the Messenger of Allāh ﷺ that he was overtaken by major impurity (janābah) during the night, so the Messenger of Allāh ﷺ said: “Perform ablution (wuḍū’), wash your penis, then sleep.”(2)

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(1) Its chain of transmission is authentic (ṣaḥīḥ). ‘Āṣim al-Aḥwal: he is Ibn Sulaymān, and Abū al-Mutawakkil: he is ‘Alī ibn Dāwūd al-Nājī.
It was also narrated by Muslim (308), al-Tirmidhī (141), al-Nasā’ī in al-Kubrā (254), and Ibn Mājah (587) via multiple paths from ‘Āṣim al-Aḥwal, with this chain.
It is also in Musnad Aḥmad (11036) and Ṣaḥīḥ Ibn Ḥibbān (1210), (1211). In the second narration there is an addition: “for that is more conducive to returning.” The matter here indicates recommendation (nadb). Ibn ‘Abd al-Barr said: the majority (jumhūr) held that it is recommended (istiḥbāb), while the Ẓāhirīs held it to be obligatory, which is an aberrant view. The majority’s evidence is the ḥadīth of ‘Ā’ishah in this work (226), where she said: “Sometimes he would perform ghusl from major impurity at the beginning of the night, and sometimes he would perform ghusl at its end.” It was narrated by al-Tirmidhī (118) and Ibn Mājah (583) via multiple paths from Abū Isḥāq, from al-Aswad, from ‘Ā’ishah, and this is a strong chain, deemed authentic (ṣaḥīḥ) by more than one of the imams.
Ibn Khuzaymah (211) and Ibn Ḥibbān (1216) narrated from Ibn ‘Umar, from ‘Umar, that he asked the Messenger of Allāh ﷺ: “May one of us sleep while in a state of major impurity?” He said: “Yes, and let him perform ablution (wuḍū’) if he wishes.” Its chain is authentic, and it is in Ṣaḥīḥ Muslim (306) (24) with similar wording.
(2) Its chain of transmission is authentic.
It is in Muwaṭṭa’ Mālik 1/47, and via his path it was narrated by al-Bukhārī (290), Muslim (306) (25), and al-Nasā’ī in al-Kubrā (252).