The best one from you is a best (in his attitude) towards my family

Salam alaikum wa rahmatullah.

From Abu Hurayra (may Allah be pleased with him) Prophet (sallalahu alaihi wa ala alihi wa salam) said:

خيركم خيركم لأهلي من بعدي
“The best from your is a best (in his attitude) towards my family after me”

Ibn al-Arabi in “Mojam”#702.
Abu Yala in “Mosnad” #5924.
Hakim in “Mostadrak” #5359

Scholars said:
Hakim said it’s saheh on the terms of Moslem, and has a witness on the terms of shaikham.
Dhahabi in “Talhees” said hadith is on the terms of Moslem.
Shaikh Albani said it’s good in “Silsila as saheha” #1845.