Hadith.3113 - It was mentioned to Imam Jafar ibn Muhammad Al-Sadiq (as) about water on the road to Mecca and its weight.
Imam (as) said: "Water is not heavy unless the camel is carrying only water and nothing else."
Al-Kāfi #2051“We once were in the presence of abu ‘ Abd Allah (a.s.), and people mentioned water on the way to Makkah and that it is heavy. He (the Imam)...