pehli bar k alava baki har wakht qabr pr pani dalna kaisa h?

ws,pahli baar ka mustaheb hona sabit hai uske baad ka mustaheb hona rawayat se sabit nahi hai,sirf ek rawayat 6th imam ki hai aapne apne sahabi yunus ibne yaqoob ki qabr par 40 din tak hukm dia tha pani dalne ko,lekin shayad ye hukm khaas wahin ke liye tha phir bhi agar pani dalna chahen to koi burai nahi hai