Sunan Abu Dawud
1861
Sahih+3

It was reported from 'Abdul-Karim bin Malik Al-Jazari, from 'Abdur-Rahman bin Abi Laila, from Ka'b bin Ujrah, regarding this incident (as narrated in on previous hadith), and he added:"Whichever of these you do, it will suffice

SahihAl-Albani
SahihMuhammad Muhyi Al-Din Abdul Hamid