Hadith.105 - Imam Jafar ibn Muhammad Al-Sadiq عليه السلام said:
'Whoever performs ablution and wipes himself (with a towel) will have a good deed written for him. And whoever performs ablution and does not wipe himself until his ablution dries, Allah سبحانه وتعالى will write for him thirty good deeds.'.
And it is permissible for a man to pray with one ablution for all the prayers of the night and day as long as he does not break his ablution, and the same applies to a single tayammum (dry ablution) as long as he does not break it or find water.