Sahih Bukhari
Good Manners and Form (Al-Adab)
Volume: 008 / Book Number: 073 / Hadith Number: 190
Narrated 'Abdullah bin Mas'ud:
A man came to Allah's Apostle and said, "O Allah's Apostle! What do you say about a man who loves some people but cannot catch up with their good deeds?" Allah's Apostle said, "Everyone will be with those whom he loves."