Repeat when you hearing the Adhan (Fajr)

(Allaahu akbar, allaahu akbar x 2, ash-hadu al-laa ilaaha il-lal-lah x 2, ash-hadu anna muḥammadar-rasoolullaah x 2, hay ya alas salah x2, hay ya alal fala x2, as-salaatu khayrun minan-nawm x 2, allaahu akbar, allaahu akbar, laa ilaaha il-lal-lah).

“① Allah is the greatest; ② I bear witness that none has the right to be worshipped except Allah; ③ I bear witness that Muhammad is the Messenger of Allah; ④ come to the prayer; ⑤ come to the success; ⑥ Prayer is better than sleep; ⑦ Allah is the greatest; ⑧ There is no other God but Allah. Note: one should repeat mu’ath-thin says, except: hayya 'Alas-salah and hayya 'Alal-falah instead, one should say: لَا حَوْلَ وَلَا قُوَّةَ إِلَّا بِاللهِ laa ḥawla wa laa quwwata illaa billaah (There is no might nor power except with Allah)”

Abu Dawud 500