On the authority of 'Abdullaah ibn Mas'ood (radhiyallaahu 'anhu), the Messenger of Allaah (sallallaahu 'alayhe wa sallam) said:
"Verily the most beloved speech to Allaah is the servant's saying, 'Subhaanak Allaahumma wa bihamdika wa tabaarakasmuka wa ta'aalaa jad-duka wa laa ilaaha ghayruk.' (Glorified are you, O Allaah, and to you is the praise, Blessed is Your Name and Lofty is your Majesty, there is none worthy of worship other than you.) The most hated speech to Allaah is when a man says to another man, 'Fear Allaah!' and he replies, 'Worry about your own self!' "
It was reported by Al-Asbahaanee in At-Targheeb (739), and Al-Albaanee authenticated it in Silsilatul-Ahaadeethis-Saheehah (2598).