Steal the statue in the Temple of Dibella

Walkthrough
If the Dragonborn asks Degaine, a beggar in Markarth about money, the latter will mention a scheme to steal a Statue of Dibella from her temple in the city.

Steal the statue in the Temple of Dibella
Whether or nor the Dragonborn agrees, this marks the temple on the map. Entering the temple and its Inner Sanctum then provides the opportunity to begin the quest The Heart of Dibella.

The statue in question is in the Inner Sanctum of the temple.

Speak to Degaine
It is possible to complete The Heart of Dibella and subsequently steal the statue, completing both quests, but stealing the statue first will make the second quest unavailable and only yield the reward of some gold from Degaine.

Stehle die Statue aus dem Tempel der Dibella