"Contain yourself, woman!" Valon snapped with perhaps a bit more aggression than was really needed. Then he looked at his staff, amazed and surpriced at the same time. As he raised it, the water went from a serene pouring to a more nope-kind of speed. Before it died out completely a few drops of the liquid had reached his hand. It wasn't even warm. 
"This isn't right... This isn't right at all." He said and dug through his pack, searching for his book of magic. He found it and immediately started to serch through the pages for the spell. 
Spellbokks are, contrary to popular belief, not written with words or dancing letters that rearrange themself if they're read by someone "unworthy" They are written with colours, and shapes. Magic cannot be captured with words, but with emotions and feelings. To describe the finer points of magic with mere words would be like explaining the history of the universe using drums. 

No idea how long he sat there, Valon finally laid eyes on the correct spell. He went through it in his head amd found the mistake, but couldn't figure out how it had gone so horribly wrong. He leafed through the book into the section about water magic and had one of those aha-moments. "Al Fehru, you lazy bastard" he whispered as he read the spell of water. It was the exact same spell, but with a small, tiny, change. In text, you could say that he forgot to change "lot" to "not". The grand mage Al Fehru had belinged to the desert people, and as such found water to be much more valuable than fire, but had discovered both spells, and had written them down on the same day. He made a mental note of this, to prevent the same mistake happening again. 

Suddenly his ears picked up a sound and forced him to break concentration. He looked up and tried to pinpoint the source of the sound while his brain tried to figure out what kind of sound it was. His head jerked violently to the side when the signal finally came. A screm of fear, and uncomfortably close.