Source: The Great Interpretation of Dreams (Ibn Sirin)
Seeing one's father in a dream indicates achieving one's goal and fulfilling objectives. If one sees him sick, it indicates the dreamer's illness, and if one sees him dead, it indicates weakness and feebleness.
Source: Perfuming Humanity in the Expression of Dreams (Al-Nabulsi)
The father in a dream is the cause of existence, and seeing him indicates attaining what the dreamer wishes. The death of the father indicates weakness in one's condition and a change in affairs.
Source: Signs in the Science of Expressions (Ibn Shaheen)
The father is interpreted as goodness, benefit, and the fulfillment of hopes. Whoever sees his father in the best condition, it indicates joy and happiness for the dreamer.