Closeness to the wife/wives
Narrated Aisha (radiyallaahu-anhaa): ”The Prophet (sallal-laahu-alayhi-wasallam) used to lean on my lap during my menses and then would recite the Qur’aan.” 
Imaam Abdul-Azeez Bin Baaz (rahimahullaah) said:
”In this is an (indication) of his (i.e. the Prophet) humbleness and friendly (attitude) towards his family.” 
Bukhaari Vol 1. Hadeeth 297
Al-Hulalul Ibreeziyyah Min At-Ta’liqaat Al-Baaziyyah Alaa Saheeh al-Bukhaari.
Vol 1. Page:92. Footnote1