This quest is not available in game.
Fill the Empty Brown Waterskin at the watering hole below Brine's hut and return it to her in the Barrens.
To find understanding and gain the sapta from me, you must seek out only the purest forms of water. As you fetch the samples for me, take note of your surroundings. Be aware of the creatures that rely on the water, that protect it. See how it affects forests and deserts. Witness how the very substance that sustains life will force creatures to take lives.
We shall start with a simple task: down below my hut there is a pond of the precious liquid. Fill this skin with it and return to me.