Seeing a padlock in your dream typically indicates that you are being treated harshly and disrespectfully by someone in your life. If you dream of a wooden padlock, it symbolizes deception and uncertainty. Locking your own door securely suggests that you want to protect yourself from certain aspects of your life. This reflects your awareness of the need for security and privacy.
From Imam Muhammad Ibn Seerin's Dictionary of Dreams According to Islamic Inner Traditions â entry "Padlock" (page 315).
A padlock in a dream represents an employee who is treated roughly and unfavorably. A padlock made from wood in a dream represents deceit and hypocrisy. Locking one's door securely in a dream means managing and controlling one's business in accordance with the divine laws. If one's door does not have a lock in a dream, it means that one has no control over which way his life goes, and that he cares little about its consequences. Attempting to lock one's door, but to no avail in a dream means one's failure to complete an important project. Breaking a lock and entering a house in a dream represents a conqueror or benefits that will come through such a person. A padlock in a dream also represents a bolt, a door latch, one's son, a handicapped wife, taking shelter away from one's enemy, a hidden treasure, or a burial ground. A padlock in a dream also may denotes sorcery, concealing secrets, or hindrances obstructing one's travel plans. Putting a padlock on one's door in a dream means prosperity after suffering from poverty, or receiving honors after being humiliated. A padlock in a dream also could represent a bastard son, or a foundling. (Also see Close; Lock)
Note: Islamic dream interpretation depends on the dreamer's circumstances and state. This is a general guide drawn directly from the source book.
