Shaykh Saalih al Luhaydaan was asked on 12/23/09 about ‘Aashooraa and the narration about fasting three days. He said that a person should fast the 9th, 10th and 11th due to the narrations that were mentioned, in which, he said were authentic. However, he contended that they were optional, not obligatory.
Shaykh ‘Abdul Majeed as Subayyal was asked on 12/23/09 about the same issue mentioned previously. He said it’s difficult to say that those narrations (to fast three days) are weak especially when you have major scholars (ash Shawkaanee, Ibn Baaz, Shaykh Saalih Luhaydaan etc) saying that you can use them. Next, he mentioned that this is an issue with some room for interpretation. Don’t be hard on the people. He also mentioned that whoever fasts the 9th and the 10th this is good, or the 10th and the 11th which is also good, and whoever fast three days for precautionary reasons then that too is ok, insha Allah.