Messenger of Allah (saas) said: "Whoever does not call upon Allah, He will be angry with him."
Sunan Ibn Majah Book 34, Hadith 1
← Previous Hadith "I passed by the Prophet (saas) and he said to me: 'O Hazim, say often: "La hawla wa la quwwata illa billah (there is no power and no strength except with Allah)," for it is one of the treasures of Paradise.'"

Sunan Ibn Majah Book 33, Hadith 170 Next Hadith → the Messenger of Allah (saas) said: "Indeed the supplication is the worship." Then he recited: "And your Lord said: Invoke Me, I will respond to you."

Sunan Ibn Majah Book 34, Hadith 2