ANSWER:

If you offer any prayer before sitting down this is sufficient.

NO NEED to pray another 2 units of Tahiyatul Masjid after that. 

Lets suppose we pray 4 sunnah of duhr in musjid.Is it mandatory thn to offer 2 Tahiyatul masjid after these 4Sunnah and then sit to wait for Farad prayer? Can i somtimes pray Tahiyatul Musjid after Farad in order to spend some more time in musjid?

Prayer | July 24, 2019 2:11 am
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In my locality we have many masjids and when there is time for adhan,every masjid uses their own loudspeakers for adhan call and each masjid give adhan at different times usually, my question is have i to answer each and every adhan or one adhan is enough, and can i continue my work after one adhan is over or i have to wait for each and every adhan to get over and till then remain silent.