حَدَّثَنَا سُفْيَانُ عَنْ أَيُّوبَ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ أَنَّهُ قَالَ حَقٌّ عَلَى كُلِّ مُسْلِمٍ أَنْ يَبِيتَ لَيْلَتَيْنِ وَلَهُ مَا يُوصِي فِيهِ إِلَّا وَوَصِيَّتُهُ مَكْتُوبَةٌ عِنْدَهُ
مسند امام احمد بن حنبل · Hadith 4578
It was narrated from Ibn 'Umar that he said: It is the duty of every Muslim not to stay far two nights, if he has something for which a will should be made, without having his will written with him.
Sanad
حَدَّثَنَا سُفْيَانُ عَنْ أَيُّوبَ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ