مسائل المنتخبه (Articles Of Islamic Acts) - الخوئي، السيد أبوالقاسم - الصفحة ٢١٢ - TAKBIRATUL AHRAM

Takbiratul Ehram of the prayers with something which he is reciting already e.g. with lqamah or with asupplication which be may be reciting before the Takbir.
٩٥٩. If a person wishes to join Allahu Akbar with the recital which he is going to say thereafter for instance with Bismillahir Rahmanir Rahim he should pronounce the "R" of Akbar as Akbaru However, the obligatory precaution is that he should not join it with any other thing in obligatory prayers.
٩٦٠. It is necessary that when a person pronounces Takbiratul Ehram his body is motionless and if he pronounces Takbiratul Ehram intentionally at a time when his body is in motion his pronouncing the Takbir is void.
٩٦١. The person concerned should pronounce Takbir, Hamd, Surah, Recital and supplication in such a manner that he himself should hear it And if he cannot hear it because of deafness or too much noise he should pronounce them in such a manner that he should be able to hear it if there is no impediment.
٩٦٢. If a person is dumb or there is some defect in his tongue on account of which he cannot pronounce Allahu Akbar he should pronounce it in whatever manner he can pronounce it and if he cannot pronounce it at all, he should, on the basis of precaution, say it in his heart, and should make a sign for Takbir and should also move his tongue, if he can.
٩٦٣. It is recommended that after the Takbiratul Ehram the person concerned should say this: Ya muhsinu qad atakal musiu wa qad amartal muhsina an yatajawaza anilmusiei antal Muhsinu wa anal Musio bihaqqa Muhammadin wa Ali Muhammdin salli "ala Muhammadin wa Ali Muhammadin wa tajawaz an qabihi ma talamu minni. i.e. ٠ Lord who are kindto your slaves! This sinful slave has come before You and You have ordered that good people should show indulgence to the sinners. you are Kind and I am a sinner. Bestow Yourblessings on Muhammad and his progeny and overlook for the