Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
Sneezing in a dream indicates the appearance of a hidden matter. For the sick, it is healing. Whoever sneezes and people praise him (say 'Yarhamuk Allah') will receive goodness.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
Sneezing indicates guidance from God and an awakening from heedlessness. It may also indicate the death of the sick.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
Sneezing is interpreted as relief. Whoever sees himself sneeze, his affairs will be facilitated.