Prashna Upanishad 15 Chapter 4 Mantras 3 to 4

number 1: https://www.youtube.com/watch?v=xhstTQzQS7Y
number 2: https://www.youtube.com/watch?v=sLapnXd-MNE
number 3: https://www.youtube.com/watch?v=xDQWCkupiQ4
number 4: https://www.youtube.com/watch?v=7P2WUjPDUQU
number 5: https://www.youtube.com/watch?v=WUyg9hEfshY
number 6: https://www.youtube.com/watch?v=2DHjJCOhoIg
number 7: https://www.youtube.com/watch?v=DHkBbOvuRCs
number 8: https://www.youtube.com/watch?v=-thy48T1GSA
number 9: https://www.youtube.com/watch?v=FVsH9N5k9ik
number 10: https://www.youtube.com/watch?v=onCmOf5210k
number 11: https://www.youtube.com/watch?v=22e-OxM2jfo
number 12: https://www.youtube.com/watch?v=hG7qTGN4SCM
number 13: https://www.youtube.com/watch?v=Dl1pqPnIw7w
number 14: https://www.youtube.com/watch?v=pf5707c6Hmw
number 15: https://www.youtube.com/watch?v=uHepPCXTq1g
number 16: https://www.youtube.com/watch?v=yB2Wnb_VKag
number 17: https://www.youtube.com/watch?v=7_bt0DFlRM4
number 18: https://www.youtube.com/watch?v=nVuG8kqikoo
number 19: https://www.youtube.com/watch?v=z1G8Bvb6_js
number 20: https://www.youtube.com/watch?v=tGr69n3uTv8
number 21: https://www.youtube.com/watch?v=1Z82_IXfT2g
number 22: https://www.youtube.com/watch?v=acoQqMVOyIU