21st Ramadan...

After Fajr Namaaz...

-Read this name of Allah (swt) 300 times

After Zuhr Namaaz...

- Read this Name of Allah (swt) 300 times

After Asr Namaaz...

- Read this name of Allah (swt) 300 times

After Maghreb Namaaz...

- Read Dua-e-Jameela 3 times

After Isha Namaaz...

- Read Ayah No. 3 of Surah Talaq 40 times