What are the verses that indicate that acts of worship, such as prayer, fasting, and Hajj, are connected to the remembrance of God after completing them?

The verses regarding Hajj encourage the 'Ifadah (Hajj procession) from where the people poured forth and seeking forgiveness, and the remembrance of Allah after completing the rituals. They also clarify the categories of people in supplication: some ask for this world only, while others ask for both this world and the Hereafter. They also command the remembrance of Allah on specified days, and clarify that there is no sin upon him who is righteous, whether he hastens in two days or delays. As for after prayer and fasting, the encouragement for remembrance after them has been established in the Sunnah.