Makruh to offer Salah after Asr and Fajr

Sayyidina Ibn Abbas (RA) said, “I heard from many Sahaba (RA) among whom is Umar ibn al-Khattab who is the dearest to me that Allah’s Messenger (SAW) disallowed us to offer Salah after Fajr till the sun had risen and after Asr till the sun had set.

[Bukhari 581, Muslim 826, Abu Dawud 1276, Nisai 558, Ibn e Majah 1250]