Sunan an-Nasa'i
Sunan an-Nasa'i 3615
Arabic hadith text
أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا الْفُضَيْلُ، عَنْ عُبَيْدِ اللَّهِ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " مَا حَقُّ امْرِئٍ مُسْلِمٍ لَهُ شَىْءٌ يُوصَى فِيهِ أَنْ يَبِيتَ لَيْلَتَيْنِ إِلاَّ وَوَصِيَّتُهُ مَكْتُوبَةٌ عِنْدَهُ ".
Translation
Qutaybah ibn Sa'id reported to us: Al-Fudayl narrated to us, from 'Ubaydullah, from Nafi', from Ibn 'Umar, who said: The Messenger of Allah (peace and blessings be upon him) said: ‘It is not fitting for a Muslim who has something to bequeath to spend two nights without having his will written and kept with him.’
Translation notes
The Arabic sets a two-night period and says the written will should be present with the person.