Narrated Fudalah ibn Ubayd,: The Messenger of Allah ﷺ heard a person supplicating during prayer. He did not mention the greatness of Allah, nor did he invoke blessings on the Prophet ﷺ. The Messenger of Allah ﷺ said: He made haste. He then called him and said either to him or to any other person: If any of you prays, he should mention the exaltation of his Lord in the beginning and praise Him; he should then invoke blessings on the Prophet ﷺ; thereafter he should supplicate Allah for anything he wishes.
Hadith Referenceسنن ابي داود / كتاب تفريع أبواب الوتر / 1481
Abu Saeed al-Khudri reported the Messenger of Allah ﷺ as saying: If anyone says "I am pleased with Allah as Lord, with Islam as religion and with Muhammad ﷺ as Messenger" Paradise will be his due.
Hadith Referenceسنن ابي داود / كتاب تفريع أبواب الوتر / 1529
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده صحيح
Narrated Fadalah ibn Ubayd: The Prophet ﷺ said: Everyone who dies will have fully complete his action, except one who is on the frontier (in Allah's path), for his deeds will be made to go on increasing till the Day of Resurrection, and he will be safe from the trial in the grave.