Silsilat al-Ahadith al-Sahihah

It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them) that the Messenger of Allah (peace and blessings be upon him) said: "Allah Almighty said: O son of Adam! When you remember Me in solitude, I will also remember you in solitude, and when you mention Me in a gathering, I will mention you in a gathering better than the one in which you mentioned Me."