Fiqh-us-Sunnah Volume 2, Supererogatory Prayer, Fiqh 2.045.

One may combine a number of sujjud and make only one sajdah if one recites an “‘ayyah of sajdah” over and over, or one hears it being recited over and over, provided one delays the sajdah until all the recitals are finished. Some say that if one prostrates after the first recital, it will be sufficient. Others hold that one should prostrate again since the cause for the prostration is reintroduced.