25. A person praying with Tayammum sees/obtains usable water in the relevant situation.
26. The valid period for wiping over khuffs ends during prayer.
27. The khuff is removed.
28. A person unable to recite learns a verse during prayer, when not following a reciting Imam.
29. A person praying without adequate covering finds a valid covering.
30. A person praying by gestures becomes able to perform Ruku and Sujud.
These are grouped because the legal basis on which the person began the prayer changes while the prayer is still in progress.