the Prophet said: “No group gather in a sitting in which they do not remember Allah, nor sent Salat upon their Prophet, except it will be a source of remorse for them. If He wills, He will punish them, and if He wills, He will forgive them.”
the Messenger of Allah said: “There is none who utters a supplication, except that Allah gives him what he asked, or prevents evil from him that is equal to it – as long as he does not supplicate for something evil, or the cutting of ties of the womb.”
The Messenger of Allah said: “Whoever wishes that Allah would respond to him during hardship and grief, then let him supplicate plentifully when at ease.”
the Messenger of Allah (ﷺ) said: “The best remembrance is: ‘there is none worthy of worship except Allah (Lā ilāha illallāh)’ and the best supplication is: ‘All praise is due to Allah (Al-ḥamdulillāh).’”
“I heard `Uthman bin `Affan (ra) saying: ‘The Messenger of Allah (ﷺ) said: “There is no worshiper who says, in the morning of every day, and the evening of every night: ‘In the Name of Allah, who with His Name, nothing in the earth or the heavens can cause harm, and He is the Hearing, the Knowing (Bismillāh, alladhi lā yaḍurru ma`a ismihi shai'un fil-arḍi wa lā fis-samā', wa huwas-Samī`ul `Alīm)’ – three times, (except that) nothing shall harm him.” And Aban had been stricken with a type of semi-paralysis, so a man began to look at him, so Aban said to him, “What are you looking at? Indeed the Hadith is as I reported it to you, but I did not say it one day, so Allah brought about His decree upon me.”
“The Messenger of Allah (ﷺ) said: ‘Whoever says when he reaches the evening: “I am pleased with Allah as (my) Lord, with Islam as (my) religion, and with Muhammad (ﷺ) as (my) Prophet (Raḍītu billāhi rabban wabil-Islāmi dīnan wa bi-Muḥammadin nabiyyan) it is a duty upon Allah to please him.’” (Hasan Gharib)