Read all Ahadith in chapters on supplication by jami al tirmizi

Abu Hurairah narrated that: The Prophet said: “There is nothing more honorable with Allah [Most High] than supplication.”

Anas bin Malik narrated that : the Prophet said: “The supplication is the essence of worship.”

An-Nu`man bin Bashir narrated that: The Prophet said: “The supplication, is worship.” Then he recited: And Your Lord said: “Call upon me, I will respond to you. Verily, those who scorn My worship, they will surely enter Hell humiliated.

Abu Hurairah (ra) narrated that : the Messenger of Allah (ﷺ) said: “Indeed, he who does not ask Allah, he gets angry with him.”

Abu Musa Al-Ash`ari (ra) said: “We were with the Messenger of Allah (ﷺ) on a military expedition. When we returned, we overlooked Al-Madinah, and the people were pronouncing the Takbīr, and they raised their voices with it. The Messenger of Allah (ﷺ) said: ‘Verily, your Lord is not deaf nor absent, He is between you and between the heads of your mounts.’ Then he said: ‘O `Abdullah bin Qais, should I not inform you of a treasure from the treasures of Paradise: Lā ḥawla wa lā quwwata illā billāh (There is no might or power except by Allah).’”

`Abdullah bin Busr (ra) narrated that: A man said: “O Messenger of Allah (ﷺ), indeed, the legislated acts of Islam have become too much for me, so inform me of a thing that I should stick to.” He (ﷺ) said: “Let not your tongue cease to be moist with the remembrance of Allah.”

Abu Sa’eed Al-Khudri narrated that: The Messenger of Allah was asked: “Which of the worshippers is superior in rank with Allah on the Day of Judgment?” He said: “Those men who remember Allah much [and women].” He said: “I said: ‘O Messenger of Allah! What about the fighter in the cause of Allah?’ He said: ‘If he were to strike with his sword among the disbelievers and the idolater, until it breaks, and he (or it) is dyed with blood, those who remember Allah much would still be superior in rank.”

Abu Ad-Darda [may Allah be pleased with him] narrated that : the Prophet said: “Should I not inform you of the best of your deed, and the purest of them with your Master, and the highest of them in your ranks, and what is better for you than spending gold and silver, and better for you than meeting your enemy and striking their necks, and they strike your necks?” They said: “Of course.” He said, “The remembrance of Allah [Most High].” [Then] Mu’adh bin Jabal [may Allah be pleased with him] said: “There is nothing that brings more salvation from the punishment of Allah than the remembrance of Allah.”

Al-Agharr Abu Muslim narrated that: He bears witness, from Abu Hurairah and Abu Sa’eed Al-Khudri, that they bear witness, from the Messenger of Allah, that he said: “There is no group that remembers Allah, except that the angels encompass them, mercy covers them, and tranquility descends upon them: and Allah remembers (mentions) them before those who are with Him.”

Abu Sa’eed Al Khudri narrated the: Mu’awiyah came out to the Masjid and said: “What has caused you to gather for this sitting.” They said: “We gathered so that we may remember Allah.” He said, “By Allah, nothing caused you to gather for this sitting except for that?” They said, “By Allah, nothing caused us to gather for this sitting except for that.” He said: “Indeed, I did not ask you out of suspicion, and there was no one in the position I was from the Messenger of Allah who narrates less Ahadith from him than me. Indeed the Messenger of Allah came out upon a circle of his Companions and said: ‘what has caused you to gather for this sitting?’ They said: ‘We have gathered for this sitting to remember Allah, and praise Him for His having guided us to Islam, and having bestowed blessings upon us.’ So he said: ‘By Allah, nothing caused you to gather for this sitting except for that?’ He said: ‘Indeed, I did not ask you out of suspicion, verily Jibra’il came to me and informed me that Allah boasts of you to the angels.’”