How to Repeat in the Adhan

Question:
Honorable Shaykh, may Allah grant you success, is the *tarji'* (repetition) that one says, “I bear witness that there is no god but Allah,” once in a low voice, then repeats it aloud, then repeats it again in a low voice and then aloud? Or does one say it twice in a low voice, then twice aloud, and then begin with the testimony that Muhammad is the Messenger of Allah?

Answer:
He says: He testifies to Allah in secret, then he says it aloud, then he says, "I testify that there is no god but Allah," in secret, then he says it aloud, and so on with the testimony that Muhammad is the Messenger of Allah; he says it in secret, then he says it aloud. This is the stronger position. This only came in the hadith regarding the adhan of Abu Nu'aydah, and the Prophet (peace and blessings be upon him) did not order Bilal to do it, which indicates that the stronger position is not to repeat it.