Morning and evening supplications

Q 1: Must a Muslim recite the Adhkar (invocations and remembrances said at certain times on a regular basis) of the morning and the evening completely or can he do part of them one time and the other part in another? For example, should the person utter the words "How perfect Allah is, I praise Him (for One hundred times), None has the right to be worshipped except Allah, alone, without partner (for one hundred times)," and "How perfect Allah is, I praise Him by the number of His creation, by His pleasure, by the weight of His Throne, and by the ink of His words (for three times)" daily or every other day? There are some Adhkar which have similar formulas; whereas the others are totally different. Should the person recite the similar ones alternately? How should the person recite the Adhkar as reported in the Sunnah? Please advise. May Allah reward you with the best!

A 1: The basic principle is that the Muslim should recite the Adhkar in the morning and the evening according to the frequency and formula narrated in the reports which stand as proof. There is nothing wrong if the person recites more Adhkar than the number mentioned in the reports as these are good Dhikr. Q 2: Should the person be constant in reciting Surah Al-Sajdah and Al-Mulk before going to sleep or not? A 2: Yes, it is reported that the Prophet (peace be upon him) did not go to bed unless he recited Alif-Lâm-Mîm. [These letters are one of the miracles of the Qur’ân, and none but Allâh (Alone) knows their meanings]. The revelation of the Book (this Qur’ân) (Surah Al-Sajdah) and Blessed be He in Whose Hand is the dominion (Surah Al-Mulk). However, the Sanad (chain of narrators) of this narration is weak. Moreover, it was reported in Musnad from `Abdullah from his father from (Part No. 24; Page No. 248)  Aswad ibn `Amir from Hasan ibn Salih from Layth from Abu Al-Zubayr on the authority of Jabir (may Allah be pleased with him) who said, the Prophet (peace be upon him) did not use to go to bed unless he recited Alif-Lâm-Mîm. [These letters are one of the miracles of the Qur’ân, and none but Allâh (Alone) knows their meanings]. The revelation of the Book (this Qur’ân) Surah Al-Sajdah and Blessed be He in Whose Hand is the dominion (Surah Al-Mulk) It is related by Al-Tirmidhy through a weak Sanad as stated above. It includes Layth ibn Abu Sulaym who was a weak narrator and Abu Al-Zubayr Al-Makky who used to commit Tadlis (Intentional misleading information about his shaykh or the chain of narration). May Allah grant us success. May peace and blessings of Allah be upon our Prophet Muhammad, his family and Companions!