[A form of Tasbeeh & the 7 Takbeer's before Salaah]
Through my chain of transmitters reaching Shaikh ut Taifa Abu Ja'far Toosi, who relates from Shaikh Mufeed, who relates from Ibne Qawlawayh, from his father, from Sa'ad, from Barqi, from Sulayman bin Muslim Kindi, from Ibne Ghazawan, from Isa bin Abi Mansoor, from Aban bin Taghlib, who relates from Imam Ja'far as Sadiq (a.s) that he said,
"The sorrowful sigh over the oppression which have been inflicted upon us is glorification, and grief upon us is worship. And guarding our secrets carries the reward of struggle in the path of Allah."
Then he retorted,
"Verily it is necessary that this tradition be written in gold."
In the book Manaqib it is quoted through Hafs bin Ghiyas from Imam Ja'far as Sadiq (a.s), that one day the Holy Prophet (s.a.w.s) prepared to recite the Prayers and Imam Husain (a.s) was standing besides him. The Prophet recited the Takbeer (Allaho Akbar) and Imam could not pronounce it. The Prophet repeated it again but Imam could not do so.
The Prophet repeated his Takbeer seven times and on the seventh time Husain recited it correctly.
Imam Sadiq (a.s) says that thus reciting Takbeer seven times before starting the Prayers (Salat) is recommended (Sunnah).