commit blasphemy against the blessed companions رَضِىَ الـلّٰـهُ تَعَالٰی عَـنْهُم and those who join the company of such people earn the displeasure of Allah عَزَّوَجَلَّ and His Beloved Rasool صَلَّى اللهُ تَعَالٰى عَلَيْهِ وَاٰلِهٖ وَسَلَّم and destroy their Hereafter, and are not privileged to recite the Kalimah during the pangs of death.

Sayyiduna ‘Allamah Jalaluddin Suyuti Shaafi’i عَـلَيْهِ رَحْـمَةُ الـلّٰـهِ الۡـقَـوِی reported: A person was in the pangs of death, when he was asked to recite the Kalimah, he replied, I am unable to recite because I used to join the company of such people who used to encourage me to speak ill of Sayyiduna Abu Bakr and Sayyiduna ‘Umar (رَضِیَ الـلّٰـهُ تَعَالٰی عَـنْهُمَا). (Sharh-us-Sudoor, pp. 38)

Dear Islamic brothers! Have you seen the terrible consequence of that most unfortunate person who was unable to recite the Kalimah in the state of Naza’ (deathbed) and those unfortunate people who themselves speak ill of the blessed companions رَضِىَ الـلّٰـهُ تَعَالٰی عَـنْهُم are made as examples of warning in the world. Let’s listen to some incidents in this regard.

Terrible consequence and an enemy of the Sahabah

Sayyiduna Sa’d Bin Abi Waqas رَضِىَ اللهُ تَعَالٰی عَـنْهُ was going somewhere. He رَضِىَ اللهُ تَعَالٰی عَـنْهُ passed by a person who was speaking ill of the blessed companions Sayyiduna ‘Ali, Sayyiduna Talhah and Sayyiduna Zubayr رَضِىَ الـلّٰـهُ تَعَالٰی عَـنْهُم. He رَضِىَ اللهُ تَعَالٰی عَـنْهُ said to that insulter: Refrain from speaking ill of my brothers or I will curse you. The fearless insulter said that are you frightening me as if you are a Prophet. Sayyiduna Sa’d Bin Abi Waqas رَضِىَ اللهُ تَعَالٰی عَـنْهُ made Wudu (ablution), entered a Masjid and after performing two Rak’aat [cycle] of Salah, he رَضِىَ اللهُ تَعَالٰی عَـنْهُ prayed with these words in the court of Allah عَزَّوَجَلَّ: O Allah (عَزَّوَجَلَّ)! If he has displeased You by speaking ill of the glorious companions of Your Beloved Prophet (صَلَّى اللهُ تَعَالٰى عَلَيْهِ وَاٰلِهٖ وَسَلَّم), punish him today, show me a sign and make him an example of warning for the true believers. (He رَضِىَ اللهُ تَعَالٰی عَـنْهُ had just uttered this words) when suddenly a camel went charged through the rows of the people and fell on that insulter with its teeth, then the camel crushed him to death. It is stated: (After his death) people came to Sayyiduna Sa’d رَضِىَ اللهُ تَعَالٰی عَـنْهُ running and said: O Abu Ishaaq! Allah عَزَّوَجَلَّ has answered your prayer (and the enemy of the blessed companions has been destroyed).

(Dalaail-un-Nubuwwah, vol. 6, pp. 190)