1-Wasting and non-economizing in the use of water even if performing wudu from the sea.

Allah (G. B. H) says: {Do not waste for He (Allah) does not love those who waste} ["Al-An'am: 141]

Also, Abdullah ibn Amr ibn Al-A'as I narrated that:

"The Prophet (P. B. U. H) passed by Sa'id while making wudu and said:

"What wastefulness!"

Sa'id said: 'Can there be wastefulness in wudu?'

He replied: "Yes, even if you are (making wudu) from a running river".

[Ibn Maja, Vol. 1, The Book of Purification, Chapter 48/425]

2-Running water through the beard with one's fingers if one is in a state of ihram, because hair may fall out.

3- Washing or wiping more than three times, for he (P. B. U. H) said in the above mentioned hadith of Amr ibn Shu'ayb:

"And whoever does more than this, or less, he has done wrong"(pa: 52)

5-Asking others for help in washing unless for an excuse.

It is known that he (P. B. U. H) would not allow anyone to help him with his wudu.

5-Not beginning with the right.

6-Exaggeration in rinsing the mouth and nose out with water if one is fasting, for the above mentioned hadith:

"... And exaggerate in inhaling the water into the nose unless you are fasting".

7-Performing wudu in a najis place so as not to get contaminated or imagine so.