مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2235
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn 'Abbas (رضي الله عنه) that the Messenger of Allah (ﷺ) used to kiss his wives on the head when he was fasting.
Musnad Ahmad 2241Its isnad is saheeh]