There are no days during which the righteous action is so pleasing to Allah than these days (i.e., the first ten days of Dhul-Hijjah).

He was asked: “O Messenger of Allah, not even Jihad in the Cause of Allah?” He ﷺ replied, “Not even Jihad in the Cause of Allah, except in case one goes forth with his life and his property and does not return with either of it.”

Abu Hurayrah narrated that the Prophet (ﷺ) said:

“A surah from the Quran containing thirty verses will intercede for a man so that he will be forgiven. It is the surah Tabarak Alladhi bi yadihi’l-mulk [i.e., Surat al-Mulk].”

[Narrated by al-Tirmidhi, 2891; Abu Dawud, 1400; Ibn Majah, 3786.] Al-Tirmidhi said, this is a sound hadith. It was classed as sahih by Shaykh al-Islam Ibn Taymiyah in Majmu’ al-Fatawa, 22/277, and by Shaykh al-Albani in Sahih Ibn Majah, 3053.

At-Tirmidhi (2892) also narrated from Jabir (may Allah be pleased with him) that:

The Prophet (ﷺ) would not go to sleep until he had recited “Alif, Lam, Mim. (This is) the revelation of the Book” (Surat As-Sajdah) and “Tabarak alladhi bi yadihi’l-mulk… (Blessed is He in whose hand is dominion…)” (Surat Al-Mulk)

↕️▪︎Sayyid Al-Istighfaar (the chief supplication for seeking forgiveness)

Shaddaad ibn Aws reported that the Prophet, ﷺ, said: “The chief of seeking forgiveness is to say: ‘O Allaah, You are my Lord, there is no deity worthy of worship besides You.You created me, I am Your slave, and I am fulfilling Your covenant and promise as much as I am able.I seek refuge in You from the evils of what I have done.I confess to You Your blessings on me and I confess my sins, so forgive me, because only You forgive sins .

He, ﷺ, said: “Whoever says it in the morning while believing in it, then dies during that day before they sleep, is of the people of Paradise, and whoever says it at night while believing in it, then dies that night before waking, is of the people of Paradise .

📒Reported by Al-Bukhaari (6306).

The Prophet صلى الله عليه و سلم said:  ‏

“Glad tidings to those who find a lot of Isthigfār (seeking forgiveness) in the record of their deeds.”

[Sunan Ibn Majah (3818)]

[Hassan (522) As-Saheehul Musnad Of Imām Muqbil رحمه الله]

Would he Notice it? 

The Messenger of Allah ﷺ said, “There is a Shirk among you that is more hidden than the crawling of the ant.” 

The dua mentioned in this audio by Shaykh ‘Ābdurrazzaq ibn ‘Abdul Muhsin al-Badr حفظهما الله is, 

اللّهُمَّ إِنّي أَعوذُبِكَ أَنْ أُشْرِكَ بِكَ وَأَنا أَعْلَمْ، وَأَسْتَغْفِرُكَ لِما لا أَعْلَم

Allaahumma ‘innee ‘a'oothu bika 'an 'ushrika bika wa 'anaa 'a'lamu, wa 'astaghfiruka limaa laa 'a'lamu

O Allah, I seek refuge in You lest I associate anything with You knowingly, and I seek Your forgiveness for what I know not.