A free app for Android, by Amar Apps.

Waz – Bangla Waz contains videos of Islamic sermons from various religious scholars, including Allama Shah Ahmed Shafi, Dr. Anayet Ullah Abbasi, and Mufti Zakaria. All sermons are categorized by name. For example, if you want to listen to Mufti Zakaria, you just need to tap his name and the app will show you a list of all his sermons. Alternatively, you can view the latest sermons in the “New Waz” section. 

Waz – Bangla Waz only works when you’re connected to the internet, so be sure to enable WiFi or mobile connectivity before viewing any video. If you can’t find your favorite Islamic sermon, you may send an email requesting the developer to upload it.