Performing the Tahiyyatul-Masjid whilst the Adhaan is being called
Question: What is the ruling regarding performing the Tahiyyatul-Masjid (a 2 rak’ah prayer upon entering the masjid) whilst the mu.adhdhin is calling the adhaan, keeping in mind that there is no time between the adhaan and the iqaamah to perform the Tahiyyatul-Masjid?
Response: It is preferable to wait in order to respond (to the adhaan) and then say:
((O Allaah, Owner of this perfect call…))
…except for the (adhaan of the) Jumu’ah prayer when it is preferable to perform the Tahiyyatul-Masjid.
Shaykh Ibn `Uthaymeen
I`laam al-Mu`aasireen bi-Fataawa Ibn `Uthaymeen – Page 53 source:fatwaonline.com