ANSWER:

No, one doesn’t have to do istinja when they break wind. They simply have to renew their wudu before praying. 

Doing istinja after breaking wudu due to passing wind is an innovation. 

I want to ask about wudoo,during salah if a person passes wind/gas he has to do wudoo again but is it necessary to cleanse himself with water (istinja’) and then do wudoo? (The gas discharge is not watery something it’s simple stomach gas)

Ablution (Wudhu) | November 4, 2019 3:21 am
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If I will do wudhu for maghrib prayer and I want to preserve my wudhu until isha prayer, should my niyyah be intended until isha? What would be my niyyah if I want my wudhu to last until any prayer it can reach without being invalidated?
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My question is, you have said that while making wudu by washing the face it is not allowed to wash the neck and it’s bidah but by mistakenly by forgetfullness I wash my face and neck too so my question is, if it happens do i have to make wudu from first or can i continue the wudu?